NEET BIOLOGY

Detailed explanation-1: -Many organisms – including microbes, plants, and some reptiles – do reproduce asexually. But the vast majority of living things reproduce sexually.

Detailed explanation-2: -Sexual reproduction involves two parents. As you can see from Figure below, in sexual reproduction, parents produce reproductive cells-called gametes-that unite to form an offspring. Gametes are haploid cells. This means they contain only half the number ofchromosomes found in other cells of the organism.

Detailed explanation-3: -Sexual reproduction is the most common life cycle in multicellular eukaryotes, such as animals, fungi and plants. Sexual reproduction also occurs in some unicellular eukaryotes. Sexual reproduction does not occur in prokaryotes, unicellular organisms without cell nuclei, such bacteria and archaea.

Detailed explanation-4: -Asexual reproduction is found in nearly half of the animal phyla. Parthenogenesis occurs in the hammerhead shark and the blacktip shark. In both cases, the sharks had reached sexual maturity in captivity in the absence of males, and in both cases the offspring were shown to be genetically identical to the mothers.